Analysis on deep crustal structure along the onshore-offshore seismic profile across the Binhai (littoral) fault zone in northeastern South China Sea

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	Analysis on deep crustal structure along the onshore-offshore seismic profile across the Binhai (littoral) fault zone in northeastern South China Sea
	Zhao, MH ; Qiu, XL ; Ye, CM ; Xia, KY ; Huang, CL ; Xie, JB ; Wang, P
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2004-09-01
卷号	47 期号:5 页码:845-852
关键词	Northeastern South China Sea Onshore-offshore Deep Seismic Experiment Binhai(Littoral) Fault Zone Crustal Structure Low-velocity Layer
ISSN号	0001-5733
文献子类	Article
英文摘要	The onshore-offshore deep seismic experiment was carried out for the first time and filled the blankness of the seismic surveys in the transition area between South China and northeastern South China Sea. The seismic data were analyzed and processed. The different seismic phases were identified and their travel time arrivals were modeled by ray-tracing to study the P-wave velocity crustal structure of this area. The crustal structure of this area is the continental crust. The crust thickness is gradually decreasing southward along the on-shore-offshore seismic line. The low-velocity layer (5.5 similar to 5.9 km (.) s(-1)) exists generally in the middle crust (about 10.0 similar to 18.0km)with about 2.5 similar to 4.0 km thickness, which is also thinning seaward. No obvious high-velocity layer appears in the lower crust. The Binhai (littoral) fault zone is a low velocity zone, which is located about 35km southeast to the Nan'ao station and corresponding to the gradient belt of gravity & magnetism anomalies. The depth of the fault zone is close to the Moho discontinuity. The littoral fault zone is a boundary between the normal continental crust of South China and the thinned continental crust of the sea area.; The onshore-offshore deep seismic experiment was carried out for the first time and filled the blankness of the seismic surveys in the transition area between South China and northeastern South China Sea. The seismic data were analyzed and processed. The different seismic phases were identified and their travel time arrivals were modeled by ray-tracing to study the P-wave velocity crustal structure of this area. The crustal structure of this area is the continental crust. The crust thickness is gradually decreasing southward along the on-shore-offshore seismic line. The low-velocity layer (5.5 similar to 5.9 km (.) s(-1)) exists generally in the middle crust (about 10.0 similar to 18.0km)with about 2.5 similar to 4.0 km thickness, which is also thinning seaward. No obvious high-velocity layer appears in the lower crust. The Binhai (littoral) fault zone is a low velocity zone, which is located about 35km southeast to the Nan'ao station and corresponding to the gradient belt of gravity & magnetism anomalies. The depth of the fault zone is close to the Moho discontinuity. The littoral fault zone is a boundary between the normal continental crust of South China and the thinned continental crust of the sea area.
学科主题	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000224170000016
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/3769]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Lab Marginal Sea Geol, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China
推荐引用方式 GB/T 7714	Zhao, MH,Qiu, XL,Ye, CM,et al. Analysis on deep crustal structure along the onshore-offshore seismic profile across the Binhai (littoral) fault zone in northeastern South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2004,47(5):845-852.
APA	Zhao, MH.,Qiu, XL.,Ye, CM.,Xia, KY.,Huang, CL.,...&Wang, P.(2004).Analysis on deep crustal structure along the onshore-offshore seismic profile across the Binhai (littoral) fault zone in northeastern South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,47(5),845-852.
MLA	Zhao, MH,et al."Analysis on deep crustal structure along the onshore-offshore seismic profile across the Binhai (littoral) fault zone in northeastern South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 47.5(2004):845-852.